Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220020goodexcellent41excellent
210015goodexcellent31excellent
200010excellentexcellent21excellent
19008excellentexcellent11excellent
18008excellentexcellent21excellent
17006excellentexcellent11excellent
16007excellentexcellent21excellent
15008excellentexcellent21excellent
14008excellentexcellent21excellent
13008excellentexcellent21excellent
12009excellentexcellent21excellent
110011excellentexcellent21excellent
100016goodexcellent31excellent
090029goodexcellent71excellent
080039lightly pollutedexcellent101excellent
070046lightly pollutedexcellent101excellent
060045lightly pollutedexcellent81excellent
050050lightly pollutedexcellent91excellent
040033goodexcellent61excellent
030025goodexcellent41excellent
020019goodexcellent31excellent
010014goodexcellent21excellent
000012excellentexcellent21excellent
230012excellentexcellent31excellent